Refrigerating apparatus.



PATENTED JUNE 4, 1907.

F. A. RIDER. REFRIGBRATING APPARATUS.

APPLIGATION FILED NOV. l0 1906.

2 SHEETS-SHEET 1 [N VENTOR WI M55555 M7221 x56.

N0. 855,983. PATENTED JUNE 4, 1907. V

P. A. RIDER.

REFRIGERATING APPARATUS.

APPLICATION FILED NOV. 10, 1906.

2 SHEETSSHEET 2 I W] NESSES INVENTOR "U I I 6L ay g 4 I I I Attorney UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented June 4, 1907.

Application filed November 10,1906- Serial No. 342,849-

To all whom it may concern:

Be it known that I, FRANK A. RIDER, a resident of .Pittsburg, in the county of Alle ghenyand State of Pennsylvania, have invented certain new and useful Improvements in Refrigerating Apparatus; and I do hereby declare the follo to be a full, clear, and exact description the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in refrigerating apparatus, the object of the invention being to provide improvements of this character designedand arranged for maintainin the conditions necessary to a continuous a sorption of gas, by water, under a comparatively high pressure, and a subsequent continuous release of gas under a less pressure, and means for carrying away the heat of absorption, between the two operations.

With this object in view, the invention consists in certain novel features of construction and combinations and arrangements of parts as will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view in section illustrating my improvements and Fig. 2 is a similar view of a modification.

It is a well known fact that water will absorb a large proportionate volume of ammonia gas at atmospheric ressure and that such abso tion develops eat. It is also a fact that i the water is confined in a tight vessel and the ammonia supplied under ressure, that the amount of gas absorbed Wlll increase and my improved apparatus is designed for the pu ose of utihzing these principles in a most e 'cient manner. I

1 represents a gas tight receptacle contaming water into w 'ch ammoma as is forced from a receptacle 2, by means 0 a pump 3, which also allows the overflow of water in said tank or receptacle 2 to return to receptacle 1' by gravity, thus permitting the employment of. a single pump to carry out the operation'of the apparatus. The water saturated with ammonia gas is conveyed from receptacle 1 to receptacle 2, through a pipe 4, in which a weighted valve 5 is located and by this means any ressure desired may be had in receptacle 1 efore the water will flow to receptac e 2.

A coil of pipe 6, containing a circulating cooling liquid, is located in receptacle 1,; to

gas-from tank 7 to receptacle 2. This needle valve 9 is operated automatically by a diaphragm 10, located in a chamber 10, and against which diaphragm, the stem 11 of valve 9 is held by a spring 11', and the chamber 10, at the opposite side ofthe diaphragm, is connected by a pipe 12 with receptacle 1,

so that a uniform pressure is maintained in this side of chamber 10 and receptacle 1. Hence, in the event of diminution of pressure in receptacle 1, the spring Il -will overcome the ressure against the opposite side of the diap ragm 10 and cause the needle valve to open and supply ammonia gas to receptacle 2, and when the pressure increases in receptacle 1, the needle valve will be automatic-- ally closed, as will be readily understood.

The operation of my improvements is as follows :-The pump 3,'takes the ammonia gas from receptacle 2 andforces it into the water in receptacle 1 and due to thefact of such pressure, the water will become supersaturated with ammonia gas, and a correspondingly increased tem erature will be the result, such heat being ta en up by the cooling coil 6. The pump 3 also permits the overflow of Water in receptacle 2, to flow by avity through the pump as it operates, and

ack to receptacle 1, thus enabling one pump to do all the necessary work of the a paratus. The ammonia .charged Water Will pass up through pipe 4, into receptacle 2' and there the ammonia gas will be released, to correspondingly decrease the temperature of the, water, and the latter may be employed as a refrigerating agent in any desired manner, or a 0011 13 containing brine 'or other liquid, may be cooled in the receptacle 2 and used as the refrigerating-a ent.

As above state such losses of ammonia gas as may occur in the apparatus, may be automatically made up from tank 7, through.

the pipe 8, which is controlled by the pressure m receptacle 1, and the operation can therefore be continued indefinitely at maximum' ca acity.

the modification lllustratedin Fig. 2, a

i separate chamber 13 is employed to cool the supersaturated water before it passes to the expansion chamber 14. The supersaturated pump taking water and gas from the expanwater asses from the pressure chamber 15, throng a coiled pipe 16 in chamber 13 before entering expansion chamber 14, andsaid chamber 13 preferably contains cold water' or other cooling agent which may be supplied and exhausted-in any desired manner.' In all other essentials, this modification is like the preferred form of the apparatus and the results accomplished are substantially the same.

A made 1n the general form and arrangement of the parts described without departin from my invention, and hence, I do not restrict myself to the precise details set forth but consider myself at liberty to makesuch slight changes and alterations as fairly fall within the spirit and scope of my invention.

Having fully described my invention, what I claim'as new and desire to secure by Letters-Batent, is

1. In. a refrigerating machine, the combination with a pressure chamber, of an expansion chamber, a. pipe connecting said chambers, and a loaded valve in said pipe, a

eat many other changes might be sion chamber and forcing them into the pressure chamber, a cooling coil in the pressure chamber, and means for automatically supplying gas to make up for losses in the system.

2. In a refrigerating machine, the combination with a pressure chamber, of an expansion chamber, a pipe connecting said chambers, a weighted valve in said pipe, a pump taking gas from the expansion chamber and forcing it into the pressure chamber and into water contained therein, a gassupply tank, a pipe connecting said tank with a part of the apparatus, a valve in said pipe, a diaphragm controlling said valve and located in a chamher, and a pipe connecting said chamber with the pressure chamber to control the operation of the diaphragm and valve.

In testimony whereof, I have signed this specification in the presence of two subscrib- FRANK A. RIDER.

ing witnesses.

Witnesses CHARLES BARNETT, W. H. WILSON. 

